Lesson 10 Unit Exam

Edit 0 1 …
James Bonding Unit Exam
1) Using the periodic table write anion or cation and its charge next to the ion (2pt each)
  1. a. Na
  2. b. P
  3. c. Mg
  4. d. S
  5. e. Ra
2) The fallowing common polyatomic ions write the charge of the ion next to the formula (2pt each)
  1. a. CN
  2. b. NO3
  3. c. PO4
  4. d. NH4
  5. e. SO4
3) Next to each molecule write the number of valance electrons (2pt each)
  1. a. Al
  2. b. K
  3. c. Cl
  4. d. C
  5. e. N
4) Draw the electron dot structure of 3 or the atoms in the previous questions as well as the fallowing two compounds (2pt each)
  1. a. H2O
  2. b. C2H4
5) Complete the sentence (10pt)
  1. a. Covalent bonds _ electrons
  2. b. Ionic bonds_ electrons
  3. c. Metal ions take on the _ and _charge of the anion.
  4. d. _ bonds form multiple bonds







6) Below is a paper chromatography, rank the relative polarity of the colors, from most polar to most non-polar. (10pt)
http://www.uwplatt.edu/chemep/chem/chemscape/labdocs/catofp/chromato/paper/pic/rfcalc.gif
http://www.uwplatt.edu/chemep/chem/chemscape/labdocs/catofp/chromato/paper/pic/rfcalc.gif


7) Using the electronegative table tell me if these are ionic or covalent polar/nonpolar bonds. (20pt)
http://www.mrteverett.com/chemistry/pdictable/electronegativity%20table.jpg
http://www.mrteverett.com/chemistry/pdictable/electronegativity%20table.jpg

  1. a. MgF2
  2. b. CH4
  3. c. NaCl
  4. d. CaO
  5. e. Li2O
8) Remembering back to the lab on water hardness. We said that the water from the town
was harder than the water from a well what is the main reason behind it? (10pt)











9) Explain bond length and the factors that affect the bond length of the molecules. (10pt)

Back to Unit Plan